Malicious PDF — malware analysis report

Static analysis result for SHA-256 5365321996614fe0…

MALICIOUS

PDF

45.8 KB Created: 2020-08-09 22:46:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6254e1e160cd484d4a2e115b3f9bdba2 SHA-1: 727a277b84e8069d8226a0b117e42e6cc105c8a0 SHA-256: 5365321996614fe08812104a86fd9c0f357f1bddad00e35695c7468fea5f7250
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a redirector link to 'ttraff.cc', which is known malicious infrastructure. The document body is heavily obfuscated and contains metadata from wkhtmltopdf, indicating it was likely generated programmatically to host these links.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=el+mito+de+la+caverna+de+platon+pdf
    • http://files.kinkysalonnola.com/uploads/1/3/1/3/131380175/wurilupisijugiraxo.pdf
    • http://files.paulwestplumbing.com/uploads/1/3/1/3/131383977/950ee484750c.pdf
    • http://files.physicalmindco.com/uploads/1/3/0/7/130738548/nerupekoletudelo.pdf
    • http://files.belladesgagnes.com/uploads/1/3/1/3/131398010/nufasimuzo_nozefediwibom.pdf
    • http://nigawowem.pittsburgh-antiquities.com/uploads/1/3/2/7/132710780/fituzu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/povumad.pdf
    • https://cdn.shopify.com/s/files/1/0433/7496/8997/files/vasipikujexatapubun.pdf
    • https://cdn.shopify.com/s/files/1/0431/8999/3635/files/ribex.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/ruzoboguw.pdf
    • https://cdn.shopify.com/s/files/1/0430/0704/9877/files/95888941486.pdf
    • https://cdn.shopify.com/s/files/1/0429/6350/1222/files/rakipekatelivaberiw.pdf
    • https://cdn.shopify.com/s/files/1/0438/5066/2053/files/53591956105.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93861148098.pdf
    • https://cdn.shopify.com/s/files/1/0430/5122/1146/files/3804716883.pdf
    • https://cdn.shopify.com/s/files/1/0439/5145/6411/files/diccionario_hebreo_biblico_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0431/7184/0161/files/botanic_garden_singapore_map.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007230.bin
2e9bb7548ca1c04bcffa79e4f21dc3d980f11b6ab35accafb24381066221ebdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7230 5140 bytes
font_01_sfnt_off000083a0.bin
e6284057bafe3df69ba00dbfd405c18114e791497b55bfe175e7e09933867d1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83A0 11252 bytes

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